ordinal number

noun

Definition of ordinal number

1 : a number designating the place (such as first, second, or third) occupied by an item in an ordered sequence — see Table of Numbers
2 : a number assigned to an ordered set that designates both the order of its elements and its cardinal number

First Known Use of ordinal number

1607

in the meaning defined at sense 1

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ORDINAL NUMBER Defined for English Language Learners

ordinal number

Definition of ordinal number for English Language Learners

  • : a number (such as first, fifth, or 22nd) that is used to show the position of someone or something in a series


ORDINAL NUMBER Defined for Kids

ordinal number

noun

Definition of ordinal number for Students

: a number that is used to show the place (as first, fifth, 22nd) taken by an element in a series


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